《孟子·告子上》之“由是则生而有不用也，由是则可以辟思而有不为也。”句中“由是”一语，杨伯峻先生《孟子译注》释译为“由此而行”。在书后所附《孟子词典》中，又释“由，动词，由此而行之意。”杨先生之书既出，世间一般文言选本和高中课本均从其注译。但笔者认为：解 “Mencius’s suzerainty” is derived from “if there is a need to be born, from which you can think of it and not to do it.” In the sentence “you are the”, “Mr. Yang Bojun” translated “Mencius” as “ From there. ” In the “Mencius Dictionary” attached to the book, they also release “by the verb, which means that.” Yang’s book is out of both the world’s classical texts and high school textbooks are from its interpretation. But I think: solution